Who is the best hero in Overwatch on Oasis for Master players?

Shion currently leads with a 53.8% win rate and 44.1% pick rate on Oasis. Anran and Mei round out the top 3.

Which heroes are S-tier heroes in Overwatch in Master on Oasis?

S-tier on Oasis: Shion, Anran, Mei, D.Va.

How is this Overwatch tier list calculated?

Heroes are scored from a weighted blend of win rate (70%) and pick rate (30%) across competitive matches in Master ranks, with a minimum pick rate of 0.5% to filter out off-meta noise. S/A/B/C/D cutoffs are percentile-based across the resulting score distribution.

How often is the tier list updated?

Daily. The current snapshot covers competitive matches from 2026-06-18 to 2026-07-17 (30-day rolling window).

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Overwatch Master Tier List on Oasis (30-day)

Auto-generated Overwatch tier list on Oasis for Master players, derived from a 30-day window of competitive play. Win-rate and pick-rate weighted, refreshed daily.

Last updated Fri, 17 Jul 2026 10:28:29 GMT · data window 2026-06-18 → 2026-07-17

In Master competitive Overwatch on Oasis, the current S-tier picks are Shion, Anran, Mei and D.Va. Rankings combine win rate and pick rate over a 30-day window of ranked play, refreshed daily.

Map

Shion53.8% WR · 44.1% PR · 13.7% BR

Anran57.0% WR · 6.0% PR · 3.5% BR

Mei55.9% WR · 4.8% PR · 1.8% BR

D.Va55.2% WR · 6.8% PR · 50.4% BR

Kiriko49.1% WR · 45.4% PR · 5.5% BR

Mizuki53.0% WR · 19.2% PR · 15.8% BR

Moira52.8% WR · 16.7% PR · 1.4% BR

Pharah54.7% WR · 3.6% PR · 11.5% BR

Ashe53.8% WR · 5.2% PR · 1.1% BR

Cassidy49.6% WR · 32.6% PR · 17.9% BR

Mercy52.4% WR · 11.9% PR · 20.5% BR

Zenyatta52.7% WR · 8.2% PR · 4.1% BR

Baptiste51.6% WR · 13.1% PR · 1.1% BR

Sigma52.4% WR · 7.4% PR · 4.8% BR

Soldier: 7651.0% WR · 16.9% PR · 1.4% BR

Mauga52.2% WR · 8.6% PR · 42.0% BR

Reinhardt51.8% WR · 8.1% PR · 1.3% BR

Junker Queen52.2% WR · 4.3% PR · 0.1% BR

Genji51.0% WR · 12.3% PR · 1.6% BR

Juno50.5% WR · 14.8% PR · 0.2% BR

Tracer50.1% WR · 16.3% PR · 23.1% BR

Venture52.2% WR · 1.8% PR · 0.3% BR

Wuyang50.9% WR · 8.2% PR · 3.0% BR

Zarya50.9% WR · 6.6% PR · 23.2% BR

Roadhog50.5% WR · 8.5% PR · 10.6% BR

Brigitte50.0% WR · 10.3% PR · 1.6% BR

Torbjörn51.1% WR · 2.4% PR · 0.3% BR

Illari50.3% WR · 6.4% PR · 1.4% BR

Symmetra50.6% WR · 2.1% PR · 3.5% BR

Ramattra50.3% WR · 3.7% PR · 2.2% BR

Jetpack-Cat49.9% WR · 5.0% PR · 7.6% BR

Domina50.2% WR · 2.4% PR · 1.6% BR

Doomfist48.8% WR · 11.3% PR · 8.8% BR

Lifeweaver49.3% WR · 7.0% PR · 0.7% BR

Lúcio49.2% WR · 6.9% PR · 0.4% BR

Winston49.0% WR · 7.6% PR · 1.9% BR

Orisa48.0% WR · 12.1% PR · 21.1% BR

Hazard48.6% WR · 8.1% PR · 12.9% BR

Ana45.2% WR · 28.3% PR · 10.9% BR

Hanzo48.8% WR · 3.9% PR · 0.7% BR

Junkrat49.0% WR · 2.3% PR · 0.6% BR

Reaper47.1% WR · 11.0% PR · 7.3% BR

Emre47.9% WR · 4.3% PR · 0.8% BR

Bastion47.5% WR · 6.4% PR · 7.2% BR

Wrecking Ball46.9% WR · 6.4% PR · 7.0% BR

Sierra46.8% WR · 3.4% PR · 3.6% BR

Echo46.4% WR · 3.3% PR · 0.4% BR

Sojourn44.6% WR · 11.4% PR · 1.7% BR

Sombra44.9% WR · 3.4% PR · 23.8% BR

Vendetta44.6% WR · 1.8% PR · 0.5% BR

Freja43.0% WR · 1.9% PR · 1.6% BR

Widowmaker38.8% WR · 1.4% PR · 3.7% BR

How tiers are computed

Pick-rate-weighted win rate and average pick rate are z-scored within this slice. Composite score = 0.7 * z(win_rate) + 0.3 * z(pick_rate). Heroes are sorted by score and bucketed by score percentile.

Pick-rate floor: heroes below 0.5% pick rate in the slice are excluded.
Score weights: 0.7 × z(win rate) + 0.3 × z(pick rate).
Tier cutoffs (by score percentile, of 52 eligible heroes): S = top 8% · A = top 17% · B = top 25% · C = top 25% · D = top 25%.

FREQUENTLY ASKED

Who is the best hero in Overwatch on Oasis for Master players?: Shion currently leads with a 53.8% win rate and 44.1% pick rate on Oasis. Anran and Mei round out the top 3.
Which heroes are S-tier heroes in Overwatch in Master on Oasis?: S-tier on Oasis: Shion, Anran, Mei, D.Va.
How is this Overwatch tier list calculated?: Heroes are scored from a weighted blend of win rate (70%) and pick rate (30%) across competitive matches in Master ranks, with a minimum pick rate of 0.5% to filter out off-meta noise. S/A/B/C/D cutoffs are percentile-based across the resulting score distribution.
How often is the tier list updated?: Daily. The current snapshot covers competitive matches from 2026-06-18 to 2026-07-17 (30-day rolling window).

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